200932484 九、發明說明： 【發明所屬之技術領域】 本發明關於申請專利範圍第1項之引文的一種射出成 形裝置用的射出成形喷嘴，具有喷嘴體和至少一噴嘴尖 端，該喷嘴體有一縱轴，噴嘴體内至少形成一條流動通道 以供一可流動的物料通過，該可流動物料從該噴嘴尖端由 該喷嘴體出來；其中該至少一喷嘴尖端垂直於噴嘴體的縱 轴延伸。 ® 【先前技術】 射出成形噴嘴用於射出成形工具中，以將一可流動的 物料在-可預定的溫度在高壓下送到一可分離的工具塊或 模嵌入物（Formeinsatz，英：mold insert)。它們大多有一喷 嘴體及-喷嘴口件，該喷嘴體呈一材料管形式，材料管内 形成一條流動通道以供該可流動物料流過，該喷嘴口件在 末端側扦入該材料管中且形成流通道的出口開口。 〇 f先前技術有各種不同的習知種類的射出成形喷嘴， 特別疋側澆庄口（Seitenanguj3)用的射出成形喷嘴。它們大多 有-喷嘴體(其中形&至少一流動通道以供一可流動物料通 過）及至少一喷嘴尖端（它垂直於噴嘴體的縱轴延伸）。 舉例而言，德專利DE 196 18 960 A1發表了一種此類 射出成形噴嘴。它包含數個喷嘴可由側面旋入該外側受加 ',、、的喷嘴體中’該喷嘴尖端在旋人的狀態係垂直於喷嘴艘 =，軸沿徑向朝外延伸。此喷嘴體設有-定位突緣部段， 匕夺納在一個開口中，該開口在模後入物中形成。利用此 200932484 緣部段將喷嘴趙沿橫方以位，而喷嘴趙沿縱方向 可移動，俾能將喷嘴尖端旋入。然後將喷嘴體移回一組回 在此位置它沿縱向利用容納在喷嘴尖端模嵌入物中 、^立，用此方式，喷嘴體沿縱向設在與錢口相同的平 面中。該堯鑄口在模嵌入物中形成。在此 之間利用密封面密封，這歧密 失端興 .,L , 莕封面权在噴嘴尖端和模嵌入 物上，且沿相對於噴嘴尖端的徑向互配合。 ❹ ❹ =196 18 96GA1所述的射出成形喷嘴 :端:安裝較”’因為喷嘴只能從下方嵌入射出成：！ ^,^ 〇 飞了解方式’运點不但造成 具成本很咼，另外還很浪費時間。 此外，人們係外將喷嘴尘她 Μ峨M , 良導熱材料製造，俾確 ^ 、喷嘴Α端之时最佳溫度過渡（熱傳遞），如此該 可机動物料一直到澆鑄開口為 之，與工具接觸的噴嘴尖端密封二持最佳溫度。反 ， 密封面的材料則導熱性低，俾 使喷嘴尖端與模具間的熱傳遞保持儘量小。 丄在DEl96 18 96〇Al中所述的射出成形喷嘴，該喷嘴 尖端與其密封面係製成一體且 此，所希望的材料Ml J办即可流動物料的最佳 度和喷嘴尖端密封面與模 ^ 处π技n 3 間的小的熱傳遞作用這兩點不 I:兼付。此W射出成形噴嘴另-缺點在於：喷嘴體 的流動通道與喷嘴尖端的孔（這些孔使流動通道—直延= 注入位置)大致互相垂直.延伸。如此產生一 動 力，這點同樣地對射出成形程序有不良影響。'動阻 7 200932484 【發明内容】 本發明由此先前技術著手，其目的在提供具不同構造 的射出成形喷嘴，它至少可將上述缺點部分地消除。依本 發明，此目的達成之道係利用一種射出成形裝置用的射出 成形喷嘴，具有喷嘴體和至少一喷嘴尖端，該喷嘴體有一 縱轴，噴嘴體内至少形成一條流動通道以供一可流動的物 料通過，該可流動物料從該喷嘴尖端由該喷嘴體出來；其 中該至少一喷嘴尖端垂直於噴嘴體的縱軸延伸。依本發明 该至少一噴嘴尖端設計成與該喷嘴體成一體。對應地，在 該射出成形喷嘴安裝時’安裝成本也減少。 最好各有有一匣狀密封元件繞各喷嘴尖端設置，該密 封疋件有一倚靠面，該倚靠面在一定狀態時係密封地倚靠 在一模嵌入物的壁上，俾使射出成形喷嘴相對嵌入物呈密 封。 ,該匣狀密封元件由弱導熱材料製造，特別是由鈦或陶 瓷製成。對應地，在射出成形喷嘴與模嵌入物之間的熱過 渡傳遞要保持很小，如此可流動物料的溫度在注入時可最 佳地調整《為了達成密封元件與模嵌入物之該匣狀密封元 件的倚靠面作過細加工。此細加工係相對於倚靠面的輪廓 (Kcmtur)及表面粗糙度作，例如利用研磨之類的方式。 本發明一重要特點為：所有密封元件的倚靠面位在一 圓柱面上。如此該噴嘴始終可準確地嵌入—工具板的一孔 中在達到操作溫度後，所有密封元件最佳地密封地倚靠 到孔的内壁上，因此全部的喷嘴尖端相對於該工具密封。 8 200932484 =特別是在下述情形可以達成：最好該匡狀密封元 件-十成使它可在一低溫時和該噴嘴體一齊放入一模般入 物中’且當達到-可預設之操作溫度時就呈密封方式倚靠 :篏入物的一相關壁上。對應地，本發明的該射出成 形喷嘴可报簡單地安裝’其中可確保在操作狀態時密封 元件有所需的密封作用。。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 At least one flow passage is formed in the nozzle body for passage of a flowable material from the nozzle tip from the nozzle body; wherein the at least one nozzle tip extends perpendicular to the longitudinal axis of the nozzle body. ® [Prior Art] Injection molding nozzles are used in injection molding tools to deliver a flowable material to a separable tool block or mold insert at a pre-determinable temperature under high pressure (Formeinsatz, English: mold insert) ). Most of them have a nozzle body and a nozzle mouthpiece. The nozzle body is in the form of a material tube. A flow passage is formed in the material tube for the flowable material to flow through. The nozzle mouth member is inserted into the material tube at the end side and formed. The outlet opening of the flow channel. 〇 f Prior art There are various types of injection molding nozzles of various types, and in particular, injection molding nozzles for the side castings (Seitenanguj3). Most of them have a nozzle body (wherein & at least one flow passage for a flowable material to pass through) and at least one nozzle tip (which extends perpendicular to the longitudinal axis of the nozzle body). One such injection forming nozzle is disclosed in German Patent No. DE 196 18 960 A1. It comprises a plurality of nozzles which can be screwed into the outer side of the nozzle body by the side, and the nozzle tip is in a state of rotation which is perpendicular to the nozzle boat, and the shaft extends radially outward. The nozzle body is provided with a positioning flange portion that is captured in an opening that is formed in the mold back. Using this 200932484 edge section, the nozzle Zhao is positioned in the horizontal direction, and the nozzle Zhao is movable in the longitudinal direction, and the nozzle tip can be screwed in. The nozzle body is then moved back to a set back in which it is received longitudinally in the nozzle tip insert, in such a manner that the nozzle body is longitudinally disposed in the same plane as the money gate. The crucible casting is formed in the mold insert. In this case, a sealing surface seal is used, which is misleading. The L, 荇 cover right is on the nozzle tip and the mold insert, and cooperates in a radial direction with respect to the nozzle tip. ❹ ❹ =196 18 96GA1 injection molding nozzle: end: installation is more than "' because the nozzle can only be embedded from below into the injection: ! ^, ^ 〇 fly to understand the way 'sports not only cause cost, but also very It is a waste of time. In addition, people use the nozzle dust to make her M, good heat-conducting material, and make the best temperature transition (heat transfer) when the nozzle is at the end of the nozzle. The nozzle tip in contact with the tool retains the optimum temperature. In contrast, the material of the sealing surface has a low thermal conductivity, so that the heat transfer between the nozzle tip and the mold is kept as small as possible. 丄 described in DEl96 18 96 〇 Al The injection molding nozzle is integrally formed with the sealing surface thereof, and the desired material M1 can be used to optimize the flow material and the nozzle tip sealing surface and the mold π technology n 3 The heat transfer effect is not the same as I. The W injection molding nozzle has the disadvantage that the flow passage of the nozzle body and the nozzle tip hole (the holes make the flow passage - straight delay = injection position) are substantially perpendicular to each other. .in this way The same is true for the injection molding process. 'Dynamic resistance 7 200932484 SUMMARY OF THE INVENTION The present invention has been made in view of the prior art, and its object is to provide injection molding nozzles having different configurations, which can at least The disadvantages are partially eliminated. According to the invention, this object is achieved by an injection molding nozzle for an injection molding apparatus having a nozzle body and at least one nozzle tip, the nozzle body having a longitudinal axis, at least one flow passage formed in the nozzle body Passing a flowable material from the nozzle tip from the nozzle body; wherein the at least one nozzle tip extends perpendicular to a longitudinal axis of the nozzle body. According to the present invention, the at least one nozzle tip is designed to The nozzle body is integrated. Correspondingly, the mounting cost is also reduced when the injection molding nozzle is mounted. Preferably, each of the sealing members is disposed around each nozzle tip, and the sealing member has a resting surface, and the resting surface is in a certain state. The seal is placed against the wall of a mold insert to seal the injection molding nozzle relative to the insert. The braided sealing element is made of a weakly thermally conductive material, in particular made of titanium or ceramic. Correspondingly, the thermal transition between the injection-forming nozzle and the mold insert is kept small, so that the temperature of the flowable material is The injection surface can be optimally adjusted for the purpose of achieving a fine working of the weird sealing element of the sealing element and the mold insert. This finishing is performed with respect to the contour of the resting surface (Kcmtur) and the surface roughness, for example, A method of grinding or the like. An important feature of the invention is that the resting surface of all sealing elements is located on a cylindrical surface. Thus the nozzle can always be accurately embedded in a hole in the tool plate, after reaching the operating temperature, all sealing elements It is optimally sealed against the inner wall of the hole so that all of the nozzle tip is sealed relative to the tool. 8 200932484 = especially in the case where it is preferred that the braided sealing element - ten percent makes it cold at a low temperature When placed in the same manner as the nozzle body, and when reached, the preset operating temperature is sealed in a sealed manner: an associated wall of the intrusion. Correspondingly, the injection molding nozzle of the present invention can be reported to be simply mounted' wherein it ensures that the sealing element has the desired sealing action in the operational state.
Ο 依本發明一較佳實施例，該匣狀密封元件的倚靠面係 為其端面。因此密封作用大致沿喷嘴尖端的縱向或沿喷 觜體的位向達成。用此方式，密封作用的實施特別簡單。 該噴嘴尖端設計成使它不會向外突出匣狀密封元件的 倚靠面之外。對應地，可將本發明的射出成形喷嘴在一體 成形時使用。但如不採此方式也可將喷嘴尖端設計成向外 突伸超出匣狀密封元件的倚靠面。但在此情形中，該模至 少須設計成二部分式。 為了要迅速改變顏色’如果各喷嘴尖端設有一流動通 道式連接通道，其中該流動通道在喷嘴體中從流動通道或 連接通道幾乎不受阻礙地繼續延伸，則甚有利。如此，在 工具内一直到入口開口為止都不會有材料滞積。在流動通 道内的材料在更換顏色的情形可迅速而不必停工地簽通道 系統沖刷出，因此只要在很少幾個射出成形循環週期後， 可用新的顏色加工。 本發明另一特點在：該加熱件及/或溫度感測器整合在 該噴嘴體中，且宜整合在相關的槽中，從加熱件產生熱始 終最佳地加入喷嘴體且可均勻地分佈。溫度感測器可將溫 200932484 度迅速而無誤地檢出益進一步送到—控制裝置。 在結構上，如果在喷嘴體與殼體中形成一止轉手段 則甚有利，如此喷嘴始終保持在一樣的位置，此外在殼體 與射出形裝置之㈣^止轉手i俾使噴嘴^不能相 對於堯鏵開口纟射出成形I具中（特別是在模座中）轉動。 除了此方式外（或者如不用此方式），另外也可在噴嘴與 射出成形裝置之間形成一止轉手段。According to a preferred embodiment of the invention, the abutment surface of the braided sealing element is an end surface thereof. The sealing action is thus achieved substantially along the longitudinal direction of the nozzle tip or along the orientation of the nozzle body. In this way, the implementation of the sealing action is particularly simple. The nozzle tip is designed such that it does not protrude outward beyond the abutment surface of the braided sealing element. Correspondingly, the injection molding nozzle of the present invention can be used in one piece molding. However, if this is not the case, the nozzle tip can be designed to project outwardly beyond the abutment surface of the braided sealing element. In this case, however, the mold must be designed in at least two parts. In order to change the color rapidly, it is advantageous if the nozzle tips are provided with a flow passage connection passage in which the flow passage continues to extend unobstructed from the flow passage or the connection passage in the nozzle body. As such, there is no material stagnation in the tool until the entrance opening. The color change of the material in the flow channel can be quickly and without having to stop the channel system, so that it can be processed with new colors after a few injection molding cycle cycles. Another feature of the invention is that the heating element and/or the temperature sensor are integrated in the nozzle body and are preferably integrated in the associated groove, and heat generated from the heating element is always optimally added to the nozzle body and uniformly distributed. . The temperature sensor can quickly and unambiguously check the temperature of 200932484 degrees to the control unit. Structurally, it is advantageous if a stop-stop means is formed in the nozzle body and the housing, so that the nozzle is always kept in the same position, and in addition, the nozzle and the injection-shaped device are not able to be opposite to each other. The 尧铧 opening 纟 is shot out of the forming tool (especially in the mold base). In addition to (or without) this, a stop-stop means can be formed between the nozzle and the injection molding device.
最好在噴嘴體周圍設有一對準中心裝置，將噴嘴體在 一模嵌入物内對準中心。此對準中心裝置防止噴嘴體沿橫 方向運動，因此有助於維持各匣狀密封元件的密封作用。 最好該對準中心裝置至少部分地由一種弱導熱材料製造。 俾防止熱經由對準中心裝置導入模嵌入物中。 最後，該對準中心位置宜包含一分別的對準中心環， 匕可定位在一相關的「對準中心容納部」上。對準中心容 納部，舉例而言，可與喷嘴體設計成一體，該對準中心環 且由弱導熱材料製成，例如鈦或陶竟。 以下本發明利用一較佳實施例配合附圖說明。 【實施方式】 圖1〜圖5顯示一本發明之射出成形喷嘴的一較佳實施 例的各種不同視圖，該射出成形喷嘴整體用圖號（1〇)表示。 此射出成形噴嘴（10)用於一射出成形裝置中，該射出成 形裝置用於由一可流動物料__例如塑膠融物製造模製件。 此射出成形裝置（圖未示）一般有一張緊板及一分配板，分配 板平行於張緊板，分配板中形成流動通道的一系統，這些 200932484 流動通道開口於數個射出形喷嘴（ίο)中，舉例而言，這些射 出成形噴嘴設計成熱通道喷嘴形式，且各用一殼體（12)安裝 在分配板下側，如不用此方式（或除了此方式外同時另外） 也可將喷嘴直接隨工具安裝在分配器上（所謂之「TT」實施 例）。 各射出成形喷嘴（10)包含一具一縱軸L的喷嘴體（14)， 其上端設有一突緣狀之連接頭06”在此情形中，連接頭〇 6) 與噴嘴體（14)設計成一體。但如不採此方式，連接頭（16)也 可分別形成並與喷嘴體（1 4)連接。例如利用螺紋接合、壓 合、軟銲等。 在喷嘴體（14)内在中設一流通通道（18)以供一材料熔融 通過，流動通道（18)(它宜設計成孔形式）在連接頭（16)中有 一材料供應開口（20)。為了將射出成形喷嘴（1〇)相對該圖未 示的分配板密封，故在連接頭（16)上設有一環形槽（21)，和 材料供應開口（20)成同心，一密封環（圖未示）可嵌入該槽中。 流動通道（18)下端開口在二條「連接通道」（22)中，該 連接通道從流動通道（18)的式對縱軸l成一角度α向下 伸，其中該連接道（22)各開口到一喷嘴尖端（24)，此角度“ 在此處約60° 。 由於此角度遠小於90° ，故熔融物從流通道（18)到該 二連接通道（22)時，其流動阻力比起先前技術（其中角度“ 約為9(Γ )大大減少，這點對射出成形程序有很正面$效 果。因此流動通道（18)設計成保持近乎相等的流動通道 (18)(22)，其中一直出口開口為止不會有滞留或靜止的材料 200932484 沈積。因此喷嘴（10)—直都可造成最佳結果，特別是任何時 候都可迅速更換顏色。 從相關之連接通道（22)各分叉出另一連接通道（26)進入 喷嘴尖端（24) ’與連接通道（22)的轴方向a成一角度点，如 此形成二個材料出口開口（28)，該可流動材料熔融物經該材 料出口開口（2 8)進入一模座（圖未示）。喷嘴尖端（24)宜設計 成與喷嘴體（14)成一體，且對應地由高導熱性鋼構成。但喷 嘴尖端（24)也可分別形成且由另一種材料（如陶瓷）製成。 射出成形喷嘴（10)放入一個圖未示的開口（它大致呈圓 筒形且在一模嵌入物中形成）中，使得該射出成形喷嘴（1〇) 以殼體（12)的一突肩（30)倚靠在模嵌入物的一相關邊緣上。 一個對準中心匣（32)[它設有一外螺紋，且由下旋入殼體〇2) 的一相關内螺紋中]包含一環形「對準中心面」（34)，它沿 徑向朝外且將射出成形喷嘴（10)相對於模嵌入物的開口對 準中心。 另一對準中心裝置（36)設在對準中心匣（32)和喷嘴體 (14)上的喷嘴尖端（24)之間，它有一個對準中心環（32)，該 環由弱導熱材料製造’且-如對準中心E(32)的對準中心面 (34)將射出成形喷嘴（10)相對模嵌入物的開口的壁對準中 心。用此方式，可確保射出成形噴嘴⑽在模嵌入物的開口 内沿軸向A依規則對準，JL防止喷嘴體（14)沿橫方向運動。 為了將喷嘴尖端（24)相對於模嵌入物密封，因此設有一 昆狀密封元件⑽繞著各噴嘴尖端(24)而設，其端侧面(4〇) 形成S狀密封元件(38)的倚靠面。此密封元件由弱導熱材料 12 200932484 製成--此處為鈦。用此方式，從喷嘴尖端（24)得到模嵌入物 的熱減少，俾防止在材料出口開口（28)的區域溫度降低，匣 狀密封元件（38)之用於作倚靠面的端側面（4〇)作細加工使 它在低溫時可和喷嘴體（14)一齊嵌入一模嵌入物中，且至此 在達到操作溫度時，密封地緊貼在模嵌入物的相關壁上。 在此，對準中心裝置（36)防止喷嘴體（14)在模嵌入物中沿橫 方向傾斜，因此可確保密封面依規定對準，且對應地依規 定役封。細加工係相對端侧面（4〇)的輪廓與表面粗糙度作， 且舉例而言，例如用研磨及/或切屑（spanned)方式達成。 特別是如圖3所示，各喷嘴尖端（24)不突出該匣狀密封 元件（38)的端侧面（40)外，因此，射出成形喷嘴（1〇)可無問 題地推入一個一件式模嵌入物中，但如不採此方式，也可 使喷嘴尖端（24)依使用意願而突出端側面（4〇)外，其中，在 此情形中，模嵌入物須至少設計成二部分式，係能將射出 成形喷嘴安裝。 此外，在喷嘴體（14)中形成一條或數條槽（42)，有一金 屬絲狀加熱導線（此處圖中未示）可嵌入槽中。此加熱導線用 將噴嘴體（14)及喷嘴尖端（24)以及在流動通道（18)和連接通 道（22)(26)中流動的材料加熱到一預定溫度，此構成加熱件 的加熱導線可壓入槽（42)中，或軟銲在其中或用其他方式固 疋在其中。此外可將一個（圖未示的）溫度感測器一齊壓入一 槽（42)中。俾特別將喷嘴尖端（24)處的溫度檢出，但我但可 設一分別的槽或孔供溫度感測器之用，該槽或孔在適當位 置做到噴嘴體〇4)中。 13 200932484 圖6a及6b所示的實施例顯示對應於圖4實施例的一射 出成形喷嘴，但此處，喷嘴尖端（24)設有一尖端（29)，它突 出匣形密封το件（38)的端侧面，且宜一直到模座的一相關澆 鑄開口（圖未示）為止，這種實施例特別有利於防止冷液滴形 成。因此噴嘴主要適合在特別薄壁的射出成形部件作射出 成形時迅速改變顏色。 明顯地’上述實施例只用於說明，且絕對限制本發明 範圍於此。對應地可將圖1〜圖5所示之射出成形喷嘴（10) 變化及變更’而不會脫離本發明申請專利範圍中的定義的 範_。 本發明的優點綜合如下： •噴嘴（10)可使任何時候及重複地能更換顏色； •噴嘴體（14)相對於其殼體（12)止轉，且隨殼體相對於 工具止轉； •噴嘴（10)可迅速順利地安裝，換言之，在安裝前不須 將任何構件拆掉然後再裝上； Ο •對於喷嘴（10)的拆卸情形也是如此，不須將任何構件 拆下； •噴嘴（10)因此極易維修； •加熱件與溫度感測器整合在喷嘴體（14)中，如此一直 有最佳之溫度傳遞及分佈。 综論，本發明係此流動通道（18)在喷嘴尖端（24)内近乎 無阻礙地延續，為此，後者設有連接通道（22)，它們開口在 密封元件（3 8)中及模座之對應之澆鑄開口前方》 200932484 【圖式簡單說明】 圖1係本發明的射出成形喷嘴一實施例、 圖2係圖1中所示之射出成形嘴嘴的第、體圖； 圖3係圖1中所示之射出成形噴嘴的第一-側視圖； 相對於圖2所示之第2侧視圖轉了 9〇。. 一侧視圖’它Preferably, an alignment center means is provided around the nozzle body to center the nozzle body within the mold insert. This alignment center device prevents the nozzle body from moving in the lateral direction, thereby helping to maintain the sealing action of the respective sealing members. Preferably, the alignment center device is at least partially fabricated from a weakly thermally conductive material.俾 Prevent heat from being introduced into the mold insert via the alignment center device. Finally, the alignment center position preferably includes a separate alignment center ring that can be positioned on an associated "alignment center housing". The centering receiving portion, for example, can be integrally formed with the nozzle body, which is made of a weakly thermally conductive material, such as titanium or ceramic. The invention is described below with reference to the accompanying drawings in a preferred embodiment. [Embodiment] Figs. 1 to 5 show various views of a preferred embodiment of an injection molding nozzle of the present invention, which is generally indicated by a figure number (1). The injection molding nozzle (10) is used in an injection molding apparatus for producing a molded part from a flowable material such as a plastic melt. The injection molding device (not shown) generally has a tension plate and a distribution plate, the distribution plate is parallel to the tension plate, and a system for forming a flow passage in the distribution plate. The 200932484 flow passage is open to a plurality of injection nozzles (ίο In the case of, for example, these injection-molding nozzles are designed in the form of hot-channel nozzles, and each is mounted on the underside of the distribution plate by a housing (12), if not in this way (or in addition to this) The nozzle is mounted directly on the dispenser with the tool (the so-called "TT" embodiment). Each of the injection molding nozzles (10) includes a nozzle body (14) having a longitudinal axis L, and a flange-like connector 06 is provided at an upper end thereof. In this case, the connector head 6) and the nozzle body (14) are designed. In this way, the connector (16) can also be separately formed and connected to the nozzle body (14), for example, by screwing, pressing, soldering, etc. in the nozzle body (14) a flow passage (18) for melting a material, and a flow passage (18) (which is preferably designed in the form of a hole) has a material supply opening (20) in the joint (16). For the injection molding nozzle (1〇) The distribution plate (not shown) is sealed, so that an annular groove (21) is provided on the connector (16), which is concentric with the material supply opening (20), and a sealing ring (not shown) can be embedded in the groove. The lower end of the flow passage (18) is open in two "connecting passages" (22) which extend downward from the longitudinal axis l of the flow passage (18) at an angle α, wherein the connecting passages (22) are respectively opened to a nozzle tip (24), this angle "about 60° here. Since this angle is much smaller than 90°, When the melt passes from the flow passage (18) to the two connecting passages (22), its flow resistance is much lower than that of the prior art (wherein the angle "about 9 (Γ) is greatly reduced, which has a very positive effect on the injection molding process. The flow channel (18) is therefore designed to maintain nearly equal flow channels (18) (22) where there is no stagnant or stationary material 200932484 deposited until the outlet opening. Thus the nozzle (10) - straight results in the best results In particular, the color can be changed quickly at any time. From the associated connecting channel (22), the other connecting channel (26) is branched into the nozzle tip (24) 'at an angle to the axial direction a of the connecting channel (22). The two material outlet openings (28) are formed such that the flowable material melt enters a mold base (not shown) through the material outlet opening (28). The nozzle tip (24) is preferably designed to be coupled to the nozzle body (14). It is integrated and correspondingly composed of high thermal conductivity steel. However, the nozzle tip (24) can also be formed separately and made of another material such as ceramic. The injection molding nozzle (10) is placed in an opening not shown. (It is roughly cylindrical And formed in a mold insert such that the injection molding nozzle (1〇) rests on a relevant edge of the mold insert with a shoulder (30) of the casing (12). 32) [It has an external thread and is screwed into the associated internal thread of the housing 〇 2] contains an annular "aligned center surface" (34) which faces radially outward and will project the injection nozzle (10) Aligning the center with respect to the opening of the mold insert. Another alignment center device (36) is disposed between the center 匣 (32) and the nozzle tip (24) on the nozzle body (14), which has an alignment center ring (32) which is weakly thermally conductive The material is manufactured 'and the alignment center plane (34) of the alignment center E (32) aligns the injection molding nozzle (10) with respect to the wall of the opening of the mold insert. In this manner, it is ensured that the injection molding nozzle (10) is regularly aligned in the axial direction A within the opening of the mold insert, and JL prevents the nozzle body (14) from moving in the lateral direction. In order to seal the nozzle tip (24) relative to the mold insert, a bead-like sealing element (10) is provided around each nozzle tip (24), the end side (4〇) of which forms a S-shaped sealing element (38) surface. This sealing element is made of a weakly thermally conductive material 12 200932484 - here titanium. In this way, the heat of the mold insert is reduced from the nozzle tip (24), the temperature is prevented from decreasing in the region of the material outlet opening (28), and the end side of the braided sealing member (38) serving as the resting surface (4) 〇) is finely machined so that it can be embedded in the mold insert together with the nozzle body (14) at low temperatures, and thus close to the relevant wall of the mold insert when the operating temperature is reached. Here, the alignment center means (36) prevents the nozzle body (14) from being tilted in the transverse direction in the mold insert, thereby ensuring that the sealing surface is aligned as specified and correspondingly defining the seal. The contours and surface roughness of the opposite side faces (4 turns) of the fine work are, for example, achieved by grinding and/or spanning. In particular, as shown in Fig. 3, each nozzle tip (24) does not protrude beyond the end side (40) of the braided sealing member (38), so that the injection molding nozzle (1) can be pushed into one piece without problems. In the form of an insert, but if this is not the case, the nozzle tip (24) can be protruded from the side of the end (4〇) according to the intended use, wherein in this case, the mold insert must be designed in at least two parts. The injection molding nozzle can be installed. Further, one or a plurality of grooves (42) are formed in the nozzle body (14), and a metal filament heating wire (not shown here) can be embedded in the groove. The heating wire heats the nozzle body (14) and the nozzle tip (24) and the material flowing in the flow channel (18) and the connecting channel (22) (26) to a predetermined temperature, and the heating wire constituting the heating member can be Press into the groove (42), or solder it in or otherwise secure it. In addition, a temperature sensor (not shown) can be pressed into a slot (42). The temperature at the nozzle tip (24) is specifically detected, but I can provide a separate slot or hole for the temperature sensor that is in the nozzle body 4) at the proper location. 13 200932484 The embodiment shown in Figures 6a and 6b shows an injection-forming nozzle corresponding to the embodiment of Figure 4, but here the nozzle tip (24) is provided with a tip (29) which projects the dome-shaped seal τ (38) This end face, and preferably to an associated casting opening (not shown) of the mold base, is particularly advantageous for preventing cold droplet formation. Therefore, the nozzle is mainly suitable for rapidly changing the color when the injection molding of a particularly thin-walled injection molded part is formed. It is apparent that the above-described embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Correspondingly, the injection molding nozzle (10) shown in Figs. 1 to 5 can be changed and changed without departing from the definition of the scope of the invention. The advantages of the present invention are summarized as follows: • The nozzle (10) allows for color change at any time and repeatedly; • The nozzle body (14) is non-rotatable relative to its housing (12) and is rotated relative to the tool with the housing; • The nozzle (10) can be installed quickly and smoothly, in other words, it is not necessary to remove any components before installation and then reinstalled; Ο • The same is true for the disassembly of the nozzle (10) without removing any components; The nozzle (10) is therefore extremely easy to service; • The heating element and the temperature sensor are integrated in the nozzle body (14) so that there is always an optimum temperature transfer and distribution. In summary, the present invention is such that the flow channel (18) continues almost unimpeded within the nozzle tip (24), for which purpose the latter are provided with connecting channels (22) which are open in the sealing element (38) and the die holder Fig. 1 is a first embodiment of an injection molding nozzle of the present invention, and Fig. 2 is a first and a front view of the injection molding nozzle shown in Fig. 1. Fig. 3 is a diagram The first side view of the injection molding nozzle shown in Fig. 1 is turned 9 turns with respect to the second side view shown in Fig. 2. a side view
圖4係圖1中所示之射出成形喷嘴沿圖3 的剖面圖的放大圖； @線IV-iV 圖5係圖1中所示之射出成形噴嘴沿 剖面圖的放大圖； ' & v-v的 圖6a係另一實施例的剖面圖； 圖6b係圖6a的實施例的噴嘴尖端的詳細圖。 【主要元件符號說明】 A 轴方向 a 角度 β 角度 L 縱軸 (10) 射出成形喷嘴 (12) 殼體 (14) 噴嘴體 (16) 連接頭 (18) 流動通道 (20) 材料供應開口 (21) 環形槽 (22) 連接通道 15 200932484 (24) 喷嘴尖端 (26) 連接通道 (28) 材料出口開口 (29) 尖端 (30) 突肩 (32) 對準中心匣 (34) 對準中心面 (36) 對準裝置 (37) 對準環 (38) 匣狀密封元件 (40) 端侧面 (42) 槽 ❹ 16Figure 4 is an enlarged view of the injection molding nozzle shown in Figure 1 taken along the cross-sectional view of Figure 3; @线IV-iV Figure 5 is an enlarged view of the injection molding nozzle shown in Figure 1 along the cross-sectional view; ' & vv Figure 6a is a cross-sectional view of another embodiment; Figure 6b is a detailed view of the nozzle tip of the embodiment of Figure 6a. [Description of main component symbols] A-axis direction a Angle β Angle L Vertical axis (10) Injection molding nozzle (12) Housing (14) Nozzle body (16) Connector (18) Flow path (20) Material supply opening (21 ) Annular groove (22) Connecting channel 15 200932484 (24) Nozzle tip (26) Connecting channel (28) Material outlet opening (29) Tip (30) Shoulder (32) Aligning center 匣 (34) Aligning the center surface ( 36) Alignment device (37) Alignment ring (38) braided sealing element (40) end side (42) groove ❹ 16